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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abff909fd4a5c5240b6fed5e81674eff9fe737d0f1f9e47eca8ac436e88fcf69' 
  AND token = 'qX3d/R6BQ6Z6er1NFPyn4TXh41NVzzxPu0fRumBTnvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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