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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82885f56ffc447690a140db67cc56bfd12ec58d803511d50128617e09586fa18' 
  AND token = '3ylmddmfLIf/k25wGrXCV5S8QG6Z3MfJ/yb41TEXEkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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