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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c4f35e2a559a5e5c53adbd5f6eb8229435035132fdd12ea52a13c018785ba0c' 
  AND token = 'fsCeih4/bQzscQ7eegeB3JuExi0k+h34km3cCdp3P/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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