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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7d132b74e54c855341ccd16add8c2701e4cf180033bcf06391b14404ad09b17' 
  AND token = 'VJyL3lW9l/gkQIEoTu3ipefeJN2XCglSLwhepghjjfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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