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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fe2e44a28a0b585b3fe2e80f5e497d6a4a513855b59a6f21e29c0a7bb8ab58b' 
  AND token = 'nt+H2eGJnw7Yr1WWud4fwtultb00W/JzZmzZEvC7Lfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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