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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72c7918eb6a80e9c9ca2a9a849ebf7696b1776b1763e34a04bea5c26e7660dd5' 
  AND token = 'cPwU34yuqIdOPYHJQIVEuPTH9hm2oQrlnZHk1VNA8wI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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