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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bab0154eb11fce8d8526f0dc9b9f4b92c1812699c07d345ef0e36ff36807e08b' 
  AND token = 'pm6Q/Td/1Tt3J37z4xporXiCk75XALHebSSJRXPlb0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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