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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f2a387d10d538f25c8dd807aa0e543bbebbb0c8b97a4b60053dce9ef2071cc57' 
  AND token = '0i3HKZenqu726/dlsFZGLcln1GAUsWrGpmoJTnEB9iA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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