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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd96aab7fac92d9e092e26f1eba0ec781e0b2eaf618384d67615c7d4856b8634e' 
  AND token = 'y5pr0WcwzP6lERlZpPRQq0H692hO0tKi9vgKUFqEmuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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