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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0f9d92d6d3d0f936dc2b9e9ef17020ae18d6f31c9231b06c12ba5e95919cb8b5' 
  AND token = 'yNue+NHft+4q/2oscNtilh4zjbICnDI5s3cKKgYAChc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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