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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0dd039dfced7640e9a5f80527456ccce33d93032f6ac121e5404155253c754c0' 
  AND token = 'p1bXzWxAUjrVjRv1Isyl6LPFzzDTXmmoZgBM1OR8x8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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