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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbbbf329ad2cd7c8d40571746ef2642369e541b27cbf435983dea42e567b4257' 
  AND token = 'lJVZvPDfNTLhhHKWbomH4B/j2P9vP3jA8rWXcEAEPkk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00071

JSON explain

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