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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9148fa7392d99ae56c5afd425cbcd61eabe3aaf4b90af83cdd5497fa78ffbc55' 
  AND token = 'smCI8cW5K33Er95gc16STTAQSoSeIYtOhTYpwJC92WY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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