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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22052763d04e11f93009c28ee3ae69c6e96a6e85ebe70562b0612161f47a2ff7' 
  AND token = 'aTtCirIoCDVGAKdPEHJTuK5ahv14D7FVhdBa8Z/UDA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}