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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9499129f35007f4f5f093491e3a70832d305f17747a571fa114ad6bc27d52fef' 
  AND token = 'o044kHYvZL8w0jeCQoxr60/S6N6c2EKmLO1DarsKdAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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